The group was formed in early January 2012 specifically to fight Indiana’s right to work law which was signed into law in February.

The Lunch Pail Republicans are funded by a union PAC, as detailed in this entry at RedState:

Politico mentions a new poll showing Lugar leading by 2 points over Mourdock that was done by Magellan. A group called Indiana Lunch Pail Republicans paid for the polling… a group I’ve never heard of and I’m from Indiana.

i did some digging and from their April FEC report, it shows $100,000 transferred to the group from 1 PAC called “ENGINEERS POLITICAL EDUCATION COMMITTEE” which is a union PAC that has given to a littany of Democrats with a rate [sic] repub.

So a union is hiding under a shell so called Lunch Pail Republican PAC to hide the fact they are helping Lugar. Gotta help Obama’s favorite Republican I guess.

Here’s the entry for the $100,000 donation, which is the only donation the Lunch Pail Republicans have received:

Here’s information about the Engineers Political Education Committee, which was the only donor to the Lunch Pail Republicans on record so far.